Japanese artist Toshihiro Kushizaki has released the "Pixel Art Shader"
a free Blender shader that converts 3D models into pixel art like this:
![Posted Image](http://www.cgchannel.com/wp-content/uploads/2015/02/150210_BlenderPixelArtShader.jpg)
Holy mother of God indeed, this can provide an unlimited source of sprites for use with duke 3d, doom...
found via & via + original Japanese page